• International Journal of Clinical Preventive Dentistry
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• v.14 no.4
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• pp.264-270
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• 2018

Objective: This study performed a quantitative analysis using the real-time polymerase chain reaction technique to examine the oral microbial prevalence in adults and intended to examine the correlations between risk factors of periodontal disease and oral bacteria and correlation between oral test scores and oral microorganisms. Methods: We examined papillary marginal attached (PMA) index, modified patient hygiene performance (M-PHP) index, probing depth (PD), modified gingival index, and oral bacteria counts and surveyed 117, 20 years or older adult males and females who visited dental clinics in the Daejeon region to analyze the prevalence and oral health. Results: The prevalence was 100% for Fusobacterium nucleatum, meaning it was observed in all examined subject, 85.5% for Parvimonas micra, 76.1% for Prevotella intermedia, and 72.6% for Tannerella forsythia. The averages of P. gingivalis and T. forsythia increased as the examined subjects were older, and there was a statistically significant difference between T. forsythia and E. nodatum in relation to medical history, between P. intermedia and P. micra in relation to gender, and between P. intermedia and E. corrodens in relation to smoking (p<0.05). For a correlation between the oral test scores and oral microorganisms, P. gingivalis and F. nucleatum was highly correlated with PD (correlation coefficient of 0.51 and 0.41) (p<0.01) while P. gingivalis, P. micra, C. rectus, and E. nodatum were significantly correlated with M-PHP index, gingival index, PD, and PMA index (p<0.01, p<0.05). Conclusion: For oral health management of adults, the age, systemic disease, and smoking are closely related to oral bacteria, and P. gingivalis, T. forsythia, F. nucleatum, P. intermedia, P. micra, C. rectus, E. corrodens, and E. nodatum are considered to be the oral microorganisms that indicate periodontal health.

• Korean Chemical Engineering Research
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• v.55 no.5
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• pp.668-678
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• 2017

Intermolecular interactions were studied for binary mixtures of 2-propanol + cyclohexane, n-hexane, benzene, toluene, o-, m- and p-xylenes by measuring ultrasonic speeds (u) over the entire range of composition at 298.15 K and 308.15 K. From these results the deviation in ultrasonic speed was calculated. These results were fitted to the Redlich-Kister equation to derive the binary coefficients along with standard deviations between the experimental and calculated data. Acoustic parameters such as excess isentropic compressibility ($K_s^E$), intermolecular free length ($L_f$) and available volume ($V_a$) were also derived from ultrasonic speed data and Jacobson's free length theory. The ultrasonic speed data were correlated by Nomoto's relation, Van Dael's mixing relation, impedance dependence relation, and Schaaff's collision factor theory. Van Dael's relation gives the best prediction of u in the binary mixtures containing aliphatic hydrocarbons. The ultrasonic speed data and isentropic compressibility were further analyzed in terms of Jacobson's free length theory.

• The Journal of Korean Association of Computer Education
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• v.17 no.2
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• pp.11-19
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• 2014

Presently the instructional model for internet ethics education is modeled after the integrated morality. The model is based on the assumption that ethical awareness will lead to ethical activities which is based on the theory that cognition is correlated to the behavioral domains. But the side effects of the information society in the cyber space increased even when the education for the awareness of ethics in the cyber space has been taught more aggressively than before. In this study, the relation of the cognition for information ethics and the ethical behavior in the cyber space was analyzed in order to find out the implications for the effective internet ethics education model. The tools used are the 'DIT (Defining Issues Test)' to measure the behavioral ability in the physical world, the Information Ethics Judgment to measure the behavioral ability in the cyber space, and the self diagnostic tool of 'Internet ethics awareness' to measure the level of cognitive knowledge for internet ethics. The correlation of three measures was analyzed. The results were college students' levels of ethics from three tools from are considerably low. Moral judgement and information ethics judgement were not correlated which means that the behavior in the physical world was not necessarily correlated to the behavior in the cyber space. The three measurements were not statistically significantly correlated. Therefore the cognitive awareness for the information ethics were not necessarily correlated to the ethical behavior in the cyber space. Ethical cognition and the moral behavior need to be taught with equal emphasis as they do not have strong correlation.

• Journal of dental hygiene science
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• v.8 no.3
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• pp.163-168
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• 2008

Purpose: The purpose of this study was to analyze relation between dental health beliefs and dental health behavior in the high grade students of elementary school, so importance of dental health beliefs has been emphasized as a factor affecting dental health behavior. Methods: The subjects in this study were 490 students of 4, 5 and 6th grade students from elementary school in Daegu areas. The data was collected through a structured questionnaire on June 26, 2006. For data analysis, One-way ANOVA, T-test and Pearson's correlation test were utilized. Result: 1) Frequency of visit at dental clinic for one years was significantly correlated with academic years, also frequency of toothbrushing one day was significant difference with sex distinction. 2) Frequency of toothbrushing one day was significantly correlated with their's susceptibility and barrier. 3) Frequency of visit at dental clinic for one years was significantly correlated with their's susceptibility and seriousness. 4) Frequency of intake cariogenic food for one day was significantly correlated with their's susceptibility, seriousness, benefit and barrier. Conclusions: We found that student's dental health beliefs was significantly correlated with dental health behavior, so school health educators should encourage students to have properly dental care habits for lifelong dental health with practical education.

• Journal of The Korean Astronomical Society
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• v.55 no.2
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• pp.37-57
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• 2022

Using I-band images of 35 nearby (z < 0.1) type 1 active galactic nuclei (AGNs) obtained with Hubble Space Telescope, selected from the 70-month Swift-BAT X-ray source catalog, we investigate the photometric properties of the host galaxies. With a careful treatment of the point-spread function (PSF) model and imaging decomposition, we robustly measure the I-band brightness and the effective radius of bulges in our sample. Along with black hole (BH) mass estimates from single-epoch spectroscopic data, we present the relation between BH mass and I-band bulge luminosity (M_BH-M_I,bul relation) of our sample AGNs. We find that our sample lies offset from the M_BH-M_I,bul relation of inactive galaxies by 0.4 dex, i.e., at a given bulge luminosity, the BH mass of our sample is systematically smaller than that of inactive galaxies. We also demonstrate that the zero point offset in the M_BH-M_I,bul relation with respect to inactive galaxies is correlated with the Eddington ratio. Based on the Kormendy relation, we find that the mean surface brightness of ellipticals and classical bulges in our sample is comparable to that of normal galaxies, revealing that bulge brightness is not enhanced in our sample. As a result, we conclude that the deviation in the M_BH-M_I,bul relation from inactive galaxies is possibly because the scaling factor in the virial BH mass estimator depends on the Eddington ratio.

• Food Science of Animal Resources
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• v.37 no.2
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• pp.153-161
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• 2017

Fatty acid profiles in relation to meat quality traits and sensory palatability of grain-fed and grass-fed beef from Hanwoo, American, and Australian crossbred cattle were examined in this study. There were significant (p<0.001) differences in fat content and fatty acid compositions between grain-fed and grass-fed beef. Grain-fed Hanwoo had significantly (p<0.001) lower saturated fatty acid (SFA) proportion but higher monounsaturated fatty acid (MUFA) proportion compared to grass-fed cattle. The proportion of oleic acid in grain-fed Hanwoo was significantly (p<0.001) higher than that in grass-fed Hanwoo, Australian crossbred, or American crossbred cattle. Grain-fed Hanwoo had significantly (p<0.001) lower percentages of drip loss and cooking loss compared to other cattle. Overall palatability panel scores of grain-fed cattle were significantly (p<0.001) higher than those of grass-fed cattle. Consequently, sensory overall palatability was negatively correlated with proportions of SFA and polyunsaturated fatty acid (PUFA), but positively correlated with the proportion of MUFA. In particular, the proportion of oleic acid was strongly and positively correlated with fat content (r=0.91, p<0.001) and overall palatability (r=0.92, p<0.001). These results implied that high-concentrate grain-fed could increase intramuscular fat (IMF) content and the proportion of oleic acid, thus increasing the sensory palatability of Hanwoo beef.

• Journal of the Korean Home Economics Association
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• v.40 no.3
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• pp.67-82
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• 2002

The purpose of this study was to investigate the relation of social support and aggression of early adolescents. The subject were 220 adolescents aged 11 & 14 years, who were enrolled 11 child welfare facilities or 6 public schools(3 elementary & 3 middle schools) in Seoul. That is, 110 institutionalized(IA) & 110 middle class home-reared adolescent (HA)s were examined. They subjects were asked to complete the questionnaire on social support and aggression. According to the results, 1)IAs perceived less support from peers or adults and showed more aggressive behaviors than HAs. 2)Significant sex difference was observed in aggression. Girls showed lower level of aggression than boys. 3)Adolescents' aggression was significantly correlated with social support. The more support from friends, classmates, and parents HAs perceive, the less aggression they reported. Though support from peers was correlated significantly only with anger expression, support from parents was correlated significantly with all the components of aggression. And the more support from friends and classmates HAs perceive, the less aggression they reported. These findings implicate that social support is a important factor in preventing aggressive behaviors of early adolescents.

• The Korean Journal of Rehabilitation Nursing
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• v.11 no.1
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• pp.25-31
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• 2008

Purpose: This study was implemented to investigate perceived illness intrusiveness in stroke patients by the characteristics of primary caregivers. Method: Retrospective cross-sectional survey design was used. The subjects were 225 stroke patients and their primary caregivers. Demographic variables, relationship variables, burden, depression and support were measured as primary caregivers' characteristics. Data were analyzed with SPSS win 14+. T-test, ANOVA and correlation test were used depending on variables. Result: Demographic variables such as age, gender, relation with patients, and living status were not related significantly with illness intrusiveness. But primary caregivers' burden, depression and support were related significantly with perceived illness intrusiveness of stroke patients. That is, burden, depression and quantitative support of primary caregivers were significantly positively correlated with perceived illness intrusiveness of stroke patients. On the other hand, qualitative support was negatively correlated with perceived illness intrusiveness. Conclusion: Primary caregivers' characteristics such as burden, depression and support were found to be correlated with stroke patients perception such as illness intrusiveness. So, it is recommended that nursing intervention targeting burden, depression and support of primary caregivers must be developed to reduce illness intrusiveness of stroke patients.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.6
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• pp.2973-2978
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• 2012

Background: Cancer stem cells (CSC) have been described in a variety of malignancies, including breast carcinomas. Among several markers, aldehyde dehydrogenase 1 (ALDH1) has been identified as reliable for breast cancer stem cells. Knockdown of BRCA1 in primary breast epithelial cells leads to an increase in cells expressing ALDH1. Methods: We examined 127 breast carcinomas for expression of ALDH1, using immunohistochemistry and correlated with clinicopathological parameters as well as the BRAC1 status. Results: Comparing the results for both ALDH1 and BRCA1 expression showed a significant inverse association between the two, indicating that reduced BRCA1 was more often seen in breast cancer cells expressing ALDH1 (p-value = 0.044). A total of 24/110 (22%) of tumours displayed the ALDH1 + / BRCA1 -/low phenotype, which showed a trend for a relation with a high grade (p-value= 0.056). Cytoplasmic expression of ALDH1 was not correlated with tumour characteristics. Conclusion: Taken together, our findings suggest that increased ALDH1 is inversely correlated with decreased BRCA1 in a series of unselected breast carcinomas. Therefore, ALDH1 positive (cancer stem) cells with reduced BRCA1 phenotype may indicate a subset of patients for whom specific targeting of the CSC marker ALDH1 and more aggressive adjuvant treatment is appropriate.

• Journal of Korean Academy of Nursing Administration
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• v.15 no.4
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• pp.581-592
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• 2009

Purpose: This study was designed to describe the nurses' knowledge and attitude about incidence reporting according to nursing organizational culture and organizational characteristics. Methods: The subjects of this study were 783 clinical nurses who were in A university hospital in Gyeonggi-Do. The data were collected from May, 20, 2009 to June, 2, 2009. The collected data were analyzed through descriptive methods, Pearson correlation coefficient, multiple regression in SPSS win(12.0). Results: Nurses' knowledge and attitude about incidence reporting were positively correlated with innovation oriented culture, relation oriented culture, and culture of patient safety. And among characteristics of nursing organization, communication, decision making, centralization were positively correlated with nurses' knowledge and attitude about incidence reporting. But the most correlated factor with nurses' knowledge and attitude about incidence reporting was culture of patient safety. Conclusions: The findings of this study suggest that to encourage reporting incidence, there must be a organizational approach, such as creating a culture of patient safety, active participating decision making, and communication.